JP2013099893A - Method for manufacturing liquid jet head module, liquid jet head module, and liquid ejecting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing of a liquid jet head module that can control the decrease in the discharge accuracy of the liquid droplet, the liquid jet head module, and a liquid ejecting apparatus.SOLUTION: There is provided a method for manufacturing a head module 1 that includes a plurality of heads 10 that discharges the ink, and a holding member 50 that holds a plurality of liquid jet heads 10, wherein on one surface of the holding member 50, a placing surface 54 on which the plurality of heads 10 are placed, and a jig receiving surface 56 to which a positioning pin 78 of a positioning jig 70 that supports the holding member 50 touches are provided. On the one surface of the holding member 50, the placing surface 54 and the jig receiving surface 56 are divided and formed in flush, and the holding member 50 is made to touch the positioning pin 78 at the jig receiving surface 56, the plurality of heads 10 are temporarily fixed to the placing surface 54 of the holding member 50 by the adhesive and fixed by the fastening member 60.

Description

  The present invention relates to a method of manufacturing a liquid ejecting head module, a liquid ejecting head module, and a liquid ejecting apparatus.

  As a liquid ejecting apparatus typified by an ink jet recording apparatus such as an ink jet printer or a plotter, there is one having a liquid ejecting head module having a plurality of liquid ejecting heads.

  Each liquid ejecting head of the liquid ejecting head module can eject liquid such as stored ink such as a cartridge or a tank as droplets, and is fixed to a common holding member (for example, see Patent Document 1).

  A manufacturing method of such a liquid jet head module is performed as follows, for example. First, the holding member is supported by a jig. For example, the lower surface side of the holding member is placed on the base, and the upper surface side of the holding member is pressed and fixed to the base side with a jig such as a plurality of pins.

  With the holding member supported by the jig, the first liquid ejecting head is positioned at a predetermined position of the holding member. And it fixes temporarily by inject | pouring an adhesive agent between the upper surface of a holding member, and a liquid-jet head, and is finally fixed with a fastening member after that. The second and subsequent liquid ejecting heads are positioned at predetermined positions with reference to the nozzle of the first liquid ejecting head. After positioning of the second and subsequent liquid jet heads, as in the first case, they are temporarily fixed using an adhesive, and then further fixed to the holding member using a fastening member.

JP 2009-297902 A

  However, since the adhesive is injected between the liquid ejecting head and the upper surface of the holding member, the adhesive overflows from the inside, and the overflowed adhesive reaches the jig receiving surface where the jig of the holding member abuts. There is a case.

  When the adhesive adheres to the jig receiving surface in this way, the adhesive adheres to the jig, and the jig and the holding member are bonded. Further, if an adhesive is attached to the jig, the jig floats by the amount of the adhesive, and the holding member cannot be maintained parallel to the base. As a result, the positional accuracy of the plurality of liquid ejecting heads fixed to the holding member may decrease, and the ink ejection accuracy may decrease. Further, if the jig and the holding member are bonded, it takes time to remove the jig and the lead time is reduced. Also, if the adhesive is removed forcibly when removing the adhesive, the jig may be broken.

  Such a problem exists not only in an ink jet recording head module including an ink jet recording head but also in a liquid ejecting head module including a liquid ejecting head that ejects liquid other than ink.

  SUMMARY An advantage of some aspects of the invention is that it provides a liquid ejecting head module manufacturing method, a liquid ejecting head module, and a liquid ejecting apparatus that can suppress a drop in droplet ejection accuracy.

An aspect of the present invention that solves the above-described problem includes a plurality of liquid ejecting heads that discharge liquid and a holding member that holds the plurality of liquid ejecting heads, and a plurality of the liquids on one surface of the holding member. A method of manufacturing a liquid ejecting head module, comprising: a mounting surface on which an ejecting head is placed; and a jig receiving surface on which a jig supporting the holding member is abutted. The mounting surface and the jig receiving surface are divided and formed flush with each other, the holding member is brought into contact with the jig at the jig receiving surface, and the mounting surface of the holding member is In the method of manufacturing a liquid ejecting head module, the plurality of liquid ejecting heads are temporarily fixed with an adhesive and permanently fixed with a fastening member.
In this aspect, since the mounting surface is separated from the jig receiving surface, even if the adhesive injected between the liquid ejecting head and the mounting surface overflows, the overflowing adhesive remains on the mounting surface. Flows into the recess between the jig receiving surface and the jig receiving surface, and does not reach the jig receiving surface.

  As described above, since the adhesive is prevented from adhering to the jig receiving surface, the adhesive is prevented from adhering to the jig or the jig and the jig receiving surface are bonded. Thereby, workability related to the manufacture of the liquid jet head module is improved.

  Further, the adhesive attached to the jig prevents the jig from floating from the jig receiving surface by the amount of the adhesive. Thereby, in a state where the jig receiving surface is brought into contact with the jig, it is possible to maintain a state in which the height is kept constant with respect to the holding member. As a result, for example, when positioning each head using an imaging unit or the like, the distance between the imaging unit or the nozzle and the nozzle is also kept constant, so that a plurality of liquid ejecting heads can be accurately positioned on the holding member. In addition, a liquid ejecting head module that prevents a decrease in liquid discharge accuracy can be manufactured.

  Here, it is preferable that the placement surface and the jig receiving surface are formed flush with each other in the same process. According to this, it is possible to satisfactorily form the mounting surface and the jig receiving surface which are flush and divided.

  Further, the three jig receiving surfaces are provided so that the center of the one surface of the holding member is located inside a triangle formed by connecting the three jig receiving surfaces. Is preferably arranged. According to this, the holding member can be stably held when the three jig receiving portions are pressed by the jig.

  Further, the mounting portion having the mounting surface and the jig receiving portion having the jig receiving surface are provided so as to protrude from one surface of the holding member so as to be flush with each other. A separating portion that is continuous with the mounting portion and the jig receiving portion, and protrudes from one surface of the holding member, and is lower than the mounting surface and the jig receiving surface. By providing, it is preferable to divide the mounting surface and the jig receiving surface, and to form the side surface of the divided portion with an inclination with respect to one surface of the holding member. According to this, the metal mold | die which forms a holding member contacts the whole surface of the holding member containing a mounting surface, a jig | tool receiving surface, and the top face of a parting part. After the holding member is molded, when the holding member is pulled out from the mold, the mold is difficult to come off if the dividing portion between the mounting portion and the jig receiving portion is narrow. However, it becomes easy to take out the mold by providing an inclination on the side surface of the dividing portion. As a result, the durability of the mold is improved, the maintenance interval of the mold is extended, and the cost is reduced. Further, as an effect of providing an inclination, the adhesive flowing into the dividing portion can be discharged along the inclined ridgeline, and the adhesive flowing into the dividing portion can be prevented from overflowing the dividing portion and flowing into the jig receiving surface. .

Furthermore, another aspect of the invention includes a plurality of liquid ejecting heads that discharge liquid and a holding member that holds the plurality of liquid ejecting heads, and the plurality of liquid ejecting heads are provided on one surface of the holding member. A mounting surface on which the head is mounted and a jig receiving surface on which a jig supporting the holding member is abutted are provided, and the mounting surface and the jig receiving surface are separated from each other. A plurality of the liquid jet heads are fixed to the mounting surface of the holding member with an adhesive and a fastening member, and the adhesive is not attached to the jig receiving surface. The liquid ejecting head module.
In this aspect, since the mounting surface and the jig receiving surface are separated, the adhesive injected between the liquid ejecting head and the mounting surface is prevented from overflowing to the jig receiving surface. As described above, since the adhesive is prevented from adhering to the jig receiving surface, the adhesive is prevented from adhering to the jig or the jig and the jig receiving surface are bonded. Accordingly, the holding member can be held on the jig receiving surface without being obstructed by the adhesive, and the liquid ejecting head can be accurately positioned on the holding member. As a result, a liquid ejecting apparatus in which a drop in droplet ejection accuracy is suppressed is provided.

According to another aspect of the invention, there is provided a liquid ejecting apparatus including the liquid ejecting head module described above.
In this aspect, a liquid ejecting apparatus in which a drop in droplet ejection accuracy is suppressed is provided.

1 is a schematic configuration diagram of an ink jet recording apparatus. It is a disassembled perspective view which shows the head module which concerns on this embodiment. It is a perspective view of a holding member. It is a top view (bottom view) of the liquid ejection surface side of the head module. FIG. 6 is a plan view (top view) of the head module on the side opposite to the liquid ejection surface side. It is sectional drawing of a head module, and the principal part sectional drawing of the AA 'line. It is the side view and top view which show the process of manufacturing a head module. It is the side view and top view which show the process of manufacturing a head module. It is the side view and top view which show the process of manufacturing a head module. It is the side view and top view which show the process of manufacturing a head module. It is principal part sectional drawing of a holding member, and its AA 'line sectional drawing.

<Embodiment 1>
Hereinafter, the present invention will be described in detail based on embodiments. The ink jet head module is an example of a liquid ejecting head module, and is also simply referred to as a head module. An ink jet recording head is an example of a liquid ejecting head, and is also simply referred to as a head. The ink jet recording apparatus is an example of a liquid ejecting apparatus.

  FIG. 1 is a schematic configuration diagram of an ink jet recording apparatus. As shown in FIG. 1, an ink jet recording apparatus I that is a liquid ejecting apparatus of this embodiment includes a carriage 2. The carriage 2 is a hollow box-like member, and a head module (not shown) is mounted inside.

  The carriage 2 on which the head module is mounted is provided so as to be movable in the axial direction of the carriage shaft 5 attached to the apparatus main body 4. Then, the driving force of the driving motor 6 is transmitted to the carriage 2 via a plurality of gears and a timing belt 7 (not shown), so that the carriage 2 is moved along the carriage shaft 5. On the other hand, the apparatus body 4 is provided with a platen 8 along the carriage shaft 5, and a recording medium S (ejection medium) such as paper fed by a paper feeding device (not shown) is conveyed on the platen 8. It has come to be. That is, the carriage 2 reciprocates in the axial direction (hereinafter, the main scanning direction) of the carriage shaft 5, which is a direction (X direction) that intersects the feeding direction (Y direction) of the recording medium S.

  Although not particularly shown, the carriage 2 is connected to an ink supply tube for supplying ink to a head module mounted therein and a signal cable for supplying a signal such as a drive signal. In addition, although not shown, the ink jet recording apparatus I is provided with a cartridge mounting portion to which an ink cartridge (liquid storing means) storing ink is detachably mounted.

  2 is an exploded perspective view showing the head module according to the present embodiment, FIG. 3 is a perspective view of the holding member, and FIG. 4 is a plan view (bottom view) of the liquid ejection surface side of the head module. 5 is a plan view (top view) of the head module on the side opposite to the liquid ejection surface side, and FIG. 6 is a sectional view of the head modules in the direction in which the heads are arranged side by side and its AA ′ line. It is principal part sectional drawing. Note that the parallel direction of the heads is the X direction (the same direction as the main scanning direction in FIG. 1), the direction orthogonal to the parallel direction is the Y direction (the same as the feeding direction of the recording medium S in FIG. 1), the X direction, and The direction orthogonal to the Y direction is the Z direction.

  As shown in the figure, the head module 1 of the present embodiment includes a head 10 that ejects ink as a liquid, and a holding member 50 that holds a plurality of heads 10.

  The head 10 includes a head main body 20 that ejects ink droplets, a nozzle plate 21 provided on one surface of the head main body, a head case 30 that is fixed to the opposite side of the nozzle plate 21 of the head main body 20, and a head case. And 30 a flow path member 40 fixed on the side opposite to the surface on which the head body 20 is fixed.

  The nozzle plate 21 is provided with a nozzle 22 penetrating in the thickness direction. In the present embodiment, a plurality of nozzles 22 are arranged in parallel along the longitudinal direction (Y direction) of the head body 20. The plurality of nozzles 22 along the longitudinal direction is referred to as a nozzle row 22A. Each nozzle plate 21 is provided with two nozzle rows 22A. The material of the nozzle plate 21 is not particularly limited, but can be formed from, for example, SUS or a silicon substrate.

  Although not particularly illustrated, the head main body 20 is provided with a pressure generation chamber that constitutes a part of a flow path that communicates with the nozzle 22, a pressure generation unit that causes a pressure change in the pressure generation chamber, and the like. The head main body 20 is provided with a nozzle plate 21 so that the pressure generation chamber communicates with each nozzle 22. The pressure generating means causes a pressure change in the pressure generating chamber, so that ink in the pressure generating chamber is ejected from the nozzle 22.

  The pressure generating means provided in the head main body 20 is not particularly limited. For example, a piezoelectric actuator in which a piezoelectric material exhibiting an electromechanical conversion function is sandwiched between two electrodes, or a heating element is disposed in the pressure generating chamber. Then, the ink droplets are ejected from the nozzles 22 by the bubbles generated by the heat generated by the heating elements, or static electricity is generated between the diaphragm and the electrodes, and the diaphragm is deformed by electrostatic force, and the liquid is discharged from the nozzles 22. A device that ejects droplets can be used. In addition, as a piezoelectric actuator, a bending vibration type piezoelectric element in which a lower electrode, a piezoelectric material, and an upper electrode are stacked from the pressure generation chamber side to bend and deform, or a piezoelectric material and an electrode forming material are alternately stacked to form an axial direction. For example, a longitudinal vibration type piezoelectric element that expands and contracts can be used.

  The head case 30 is fixed to the opposite side of the head body 20 from the nozzle plate 21. A flow path for supplying ink from the flow path member 40 to the head body 20 or discharging it to the outside is formed inside the head case 30.

  Further, the head case 30 is provided with flange-shaped holding portions 31 protruding outward on both side surfaces in the longitudinal direction. The surface of the holding portion 31 on the nozzle plate 21 side is a holding surface 32 that comes into contact with the mounting surface 54 of the holding member 50, and the holding surface 32 is in contact with the mounting surface 54 of the holding member 50. The head 10 is held by the holding member 50.

  The holding portion 31 is provided with a through hole 33 that penetrates in the thickness direction (the stacking direction of the head main body 20, the head case 30, and the flow path member 40). The head 10 is held by the holding member 50 by inserting a fastening member 60 such as a screw member into the through hole 33 from the nozzle plate 21 side and screwing the fastening member 60 to the holding member 50.

  The flow path member 40 is fixed to the side of the head case 30 opposite to the head main body 20, and supplies ink from the outside to the head main body 20 through the head case 30 or discharges the ink from the head main body 20 to the outside. is there.

  Specifically, the surface of the flow path member 40 opposite to the surface fixed to the head case 30 is provided with a liquid flow path port 41 through which an internal flow path is opened and an external flow path is connected, And a connector 42 to which an electrical signal such as a printing signal is supplied.

  In the present embodiment, two liquid channel ports 41 are provided in each channel member 40, and the connector 42 is arranged between the two liquid channel ports 41.

  At least one of the two liquid flow path ports 41 provided in the flow path member 40 functions as a liquid supply port that supplies a liquid to the flow path inside the head 10 from the outside. That is, of the two liquid channel ports 41, one liquid channel port 41 functions as a liquid supply port, and the other liquid channel port 41 functions as a liquid discharge port that discharges the liquid inside the head 10 to the outside. May be. Further, both of the two liquid channel ports 41 may function as liquid supply ports.

  A plurality of the heads 10 configured as described above are held by the holding member 50 to constitute the head module 1.

  The holding member 50 that holds the plurality of heads 10 is a plate-like member in the present embodiment, and is provided with a holding hole 51 that penetrates in the thickness direction.

  The holding hole 51 is inserted into the flow path member 40 side from the holding portion 31 of the head 10. In this embodiment, the holding hole 51 has such a size that the flow path member 40 side of the four heads 10 can be inserted.

  In addition, the holding hole 51 has an opening having a width smaller than that of the holding portion 31 when the flow path member 40 side is inserted from the holding portion 31 of the head 10. Thus, when the flow path member 40 side of the head 10 is inserted into the holding hole 51, the flow path member 40 side surface (holding surface 32) of the holding portion 31 of the head 10 contacts the peripheral edge of the holding hole 51. By contact, movement in the insertion direction is restricted.

  A mounting portion 53 having a mounting surface 54 on which the head 10 is mounted is provided on one surface of the holding member 50.

  The placement portion 53 is formed in a rectangular parallelepiped shape protruding upward from one surface of the holding member 50. The top surface of the mounting portion 53 is a mounting surface 54. The mounting surface 54 is a surface on which the head 10 is mounted, and specifically, a surface with which the holding surface 32 of the head 10 abuts.

  Two mounting portions 53 are arranged with respect to one head 10 with the holding hole 51 interposed therebetween in the Y direction. In the present embodiment, since four heads are arranged side by side in the X direction, a total of eight placement portions 53 are provided on the holding member 50 so as to face the holding surfaces 32 of the four heads 10. In addition, the placement surface 54 of each placement portion 53 is formed flush and divided.

  Furthermore, a jig receiving portion 55 with which a positioning jig (not shown) used when fixing the head 10 to the holding member 50 is abutted is provided on one surface of the holding member 50.

  The jig receiving portion 55 is formed in a rectangular parallelepiped shape protruding upward from one surface of the holding member 50. The top surface of the jig receiving portion 55 is a jig receiving surface 56. The jig receiving surface 56 is a surface on which a positioning pin of a positioning jig described later comes into contact.

  In the present embodiment, three jig receiving portions 55 are provided at the opening edge portion of the holding hole 51 of the holding member 50. One of the jig receiving portions 55 is disposed between the two placement portions 53 at the center among the four placement portions 53 arranged in the X direction. Further, the remaining two jig receiving portions 55 are arranged so as to sandwich the four placement portions 53 arranged in the X direction.

  Further, as shown in FIG. 4, the center of the holding member 50 (in plan view) is formed inside a triangle formed by connecting these jig receiving portions 55 (a virtually conceived triangle, not particularly shown). The center of the holding member 50 is positioned. Although details will be described later, the holding member 50 can be stably held when the three jig receiving portions 55 arranged in this way are pressed by a jig.

  Further, the mounting surface 54 and the jig receiving surface 56 described above are formed to be flush with each other. The mounting surface 54 and the jig receiving surface 56 are separated from each other. A recess that is recessed from the mounting surface 54 and the jig receiving surface 56 is formed between the mounting surface 54 and the jig receiving surface 56. Say something. Alternatively, a convex portion higher than the placement surface 54 and the jig receiving surface 56 may be provided between the placement surface 54 and the jig receiving surface 56.

  The mounting surface 54 is provided with a fixing hole 52 corresponding to the through hole 33 of each head 10. The head 10 is inserted into the holding hole 51 on the flow path member 40 side, and the holding surface 32 of the holding portion 31 is in contact with the mounting surface 54 of the holding member 50. An adhesive (not shown) is injected between the holding surface 32 and the mounting surface 54, and the holding surface 32 and the mounting surface 54 are bonded. Further, the fastening member 60 is inserted into the through hole 33 of the holding portion 31, and the fastening member 60 is screwed into the fixing hole 52. Thus, the head 10 is fixed to the holding member 50 with the adhesive and the fastening member 60. The adhesive injected between the holding surface 32 and the mounting surface 54 does not adhere to the jig receiving surface 56.

  Here, a method of manufacturing the head module having the above-described configuration will be described with reference to FIGS.

  7 to 10 are a side view and a plan view showing a process for manufacturing the head module. First, a positioning jig 70 as an example of a jig will be described with reference to FIG. As shown in the figure, the positioning jig 70 includes a flat plate-like base 74, and a support portion 71 and a restriction portion 75 erected on the base 74. The support portion 71 is erected on the surface of the base 74 and has a protruding support portion main body 72 formed to be movable in the vertical direction, and a spring 73 that biases the support portion main body 72 upward in the vertical direction. It is composed of

  The restricting portion 75 includes a column portion 76 erected on the base 74, a beam portion 77 projecting laterally (horizontal direction) from the column portion 76, and a positioning pin 78 projecting from the beam portion 77 toward the base 74 side. It is composed of

  The holding member 50 is placed on the distal end portion of the support portion main body 72 of the support portion 71. As described above, since the support portion main body 72 is biased upward by the spring 73, the holding member 50 is lifted upward by the support portion 71. On the other hand, a positioning pin 78 of the restricting portion 75 is located above the jig receiving surface 56 of the holding member 50. Therefore, the upward movement of the holding member 50 biased upward is restricted by the positioning pin 78 coming into contact with the jig receiving surface 56.

  Thereby, the holding member 50 is positioned in the height direction with respect to the positioning jig 70 (base 74). For this reason, even if the thickness of the holding member 50 varies due to a manufacturing error or the like, the height positions of the jig receiving surfaces 56 with respect to the positioning jig 70 are the same.

  Further, the positioning jig 70 is provided with an imaging means 79 such as a CCD camera above the base 74. The imaging unit 79 is configured to be movable in a horizontal plane at a certain height with respect to the base 74. The imaging means 79 is used for imaging the nozzle 22 and the like in order to position the head 10 at a predetermined position of the holding member 50.

  In addition, the jig receiving part 55 provided in the holding member 50 has a holding member on the inner side of a triangle formed by connecting these jig receiving parts 55 (a triangle virtually conceived, not shown). The center of 50 (the center of the holding member 50 in plan view) is located.

  Therefore, when the positioning pin 78 comes into contact with each of the jig receiving portions 55 and is pressed toward the base 74, the holding member 50 can be stably held without being rotated or tilted.

  Moreover, it is preferable to form the mounting part 53 and the jig receiving part 55 provided in the holding member 50 in the same process. For example, the holding member 50 may be formed using a mold in which the placement portion 53 and the jig receiving portion 55 are formed flush with each other. In addition, the holding member 50 having a flat portion is formed, and a part of the flat portion is cut to form a concave portion (the step of forming the concave portion corresponds to the same step). One of the portions divided by the recess may be the mounting surface 54 and the other may be the jig receiving surface 56. Thereby, the mounting surface 54 and the jig receiving surface 56 which are flush and divided can be formed.

  Next, as shown in FIG. 8, the alignment mask 80 is placed on the positioning jig 70 and the position of the head 10 relative to the holding member 50 is stored.

  The alignment mask 80 is formed of a glass substrate or the like, and a plurality of reference marks 81 having the same size as the opening diameter of the nozzle 22 are provided corresponding to each head 10. The reference mark 81 of the alignment mask 80 is provided such that when the nozzles 22 of the head 10 are positioned on the reference mark 81, the relative positions of the nozzle rows 22A of the heads 10 are in a predetermined arrangement.

  In the present embodiment, when the nozzles 22 of the heads 10 are positioned on the reference marks 81, the nozzle rows 22A of the heads 10 are parallel to the Y direction, and the nozzle rows 22A of the heads 10 are arranged at equal intervals. A mark 81 is provided.

  Then, the reference mark 81 is imaged by the imaging means 79 and the position of each reference mark 81 is stored. For example, the coordinates in the X direction and the Y direction of each reference mark 81 are stored with an arbitrary place in the plan view of FIG.

  Next, as shown in FIG. 9, after the alignment mask 80 is removed from the positioning jig 70, the holding surface 32 of the first head 10 is mounted on the mounting surface 54 of the holding member 50.

  Then, the imaging means 79 images the nozzle 22 of the head 10. The position of the head 10 is adjusted so that the imaged nozzle 22 is located at the coordinates in the X direction and Y direction of the reference mark 81 related to the first head 10 stored previously. For example, although not particularly illustrated, the head 10 is moved in the X direction and the Y direction with a micrometer head or the like.

  Here, as described above, the imaging unit 79 has a constant height with respect to the base 74. The holding member 50 is positioned in the height direction with respect to the positioning jig 70 (base 74) by the support portion 71 and the restriction portion 75. Therefore, the height from the imaging means 79 to the jig receiving surface 56 of the holding member 50 is constant at any position where the imaging means 79 can move in the horizontal plane.

  On the other hand, a mounting surface 54 is formed flush with the jig receiving surface 56. Therefore, the distance between the nozzle 22 of each head 10 placed on the placement surface 54 and the imaging means 79 is also constant. The distance between the imaging unit 79 and the nozzle 22 may include variations in the height direction of each head 10, but does not include at least variations in the thickness of the holding member 50 itself.

  If the distance between the imaging unit 79 and the nozzle 22 of each head 10 is not constant, it is necessary to change the focal length of the imaging unit 79 for each head 10, and when positioning the nozzle 22 to the reference mark 81. An error occurs. That is, the nozzle 22 is positioned at a position shifted from the reference mark 81.

  However, in this embodiment, since the distance between the imaging unit 79 and the nozzle 22 of each head 10 is constant in this way, the nozzle 22 of each head 10 is imaged while the focal length of the imaging unit 79 is constant. In addition, each head 10 can be positioned with high accuracy.

  It is also considered that the distance between the imaging means 79 and the nozzle 22 can be made constant by making the height of the mounting surface 54 higher or lower than the height of the jig receiving surface 56 by a certain amount. It is done. However, in the manufacture of the holding member 50, the height difference between the mounting surface 54 and the jig receiving surface 56 varies, and eventually the distance between the imaging means 79 and the nozzle 22 is made constant. difficult.

  Next, when the head 10 is positioned, an adhesive is injected between the holding surface 32 and the mounting surface 54 of the head 10 and temporarily fixed.

  At this time, the mounting surface 54 is separated from the jig receiving surface 56. For this reason, even if the adhesive injected between the holding surface 32 and the mounting surface 54 overflows, the overflowing adhesive flows into the recess between the mounting surface 54 and the jig receiving surface 56, It does not reach the jig receiving surface 56.

  Since the adhesive is prevented from adhering to the jig receiving surface 56 in this way, the adhesive adheres to the positioning pin 78 (positioning jig 70) or the positioning pin 78 and the jig receiving surface 56 are bonded. Is prevented. Thereby, the workability concerning manufacture of a head module improves.

  Further, the adhesive adhering to the positioning pin 78 prevents the positioning pin 78 from floating from the jig receiving surface 56 by the amount of the adhesive. Thereby, in a state where the jig receiving surface 56 is brought into contact with the positioning pin 78, it is possible to maintain a state in which the height is kept constant with respect to the base 74 of the holding member 50. As a result, since the distance between the imaging means 79 and the nozzle 22 is also kept constant, a plurality of heads 10 can be accurately positioned on the holding member 50, and a head module that prevents a decrease in ink ejection accuracy is manufactured. it can.

  As described above, the head 10 is temporarily fixed to the holding member 50 with an adhesive, and then the head 10 is fixed to the holding member 50 with the fastening member 60.

  If only the main fixing by the fastening member 60 is performed, the position of the head 10 is shifted by the force with which the fastening member 60 is screwed into the fixing hole 52. By performing temporary fixing with an adhesive as in the present embodiment, the position of the head 10 is prevented from being displaced during the main fixing.

  Thereafter, as shown in FIG. 10, the second and subsequent heads 10 are also positioned with respect to the holding member 50 in the same manner as the first head 10, temporarily fixed with an adhesive, and finally fixed with the fastening member 60. By doing so, the head module 1 according to the present embodiment is manufactured.

<Other embodiments>
As mentioned above, although one Embodiment of this invention was described, the basic composition of this invention is not limited to what was mentioned above.

  For example, as a method of forming the holding member 50 having the mounting surface 54 and the jig receiving surface 56, a method using a mold is conceivable. When taking out the holding member 50 from the mold, if the distance between the mounting surface 54 and the jig receiving surface 56 is narrow, it may be difficult to remove the holding member 50.

  Assuming such a case, the holding member 50 can be easily removed from the mold by forming the space between the mounting surface 54 and the jig receiving surface 56 as follows.

  Fig.11 (a) is principal part sectional drawing of a holding member, FIG.11 (b) is the sectional view on the AA 'line of Fig.11 (a). As shown in the figure, a dividing portion 57 is provided between the placing portion 53 and the jig receiving portion 55. The dividing portion 57 is continuous with the placement portion 53 and the jig receiving portion 55. The dividing portion 57 protrudes from the surface on which the mounting portion 53 of the holding member 50 is provided, and is formed lower than the mounting surface 54 and the jig receiving surface 56. And the side surface 58 of the parting part 57 is made to incline with respect to the surface in which the mounting part 53 of the holding member 50 was provided.

  The mold that forms the holding member 50 having such a shape contacts the entire surface of the holding member 50 including the placement surface 54, the jig receiving surface 56, and the top surfaces of the dividing portions 57. After the holding member 50 is molded, the holding member 50 is pulled out downward from the mold. At this time, if the dividing portion 57 between the placing portion 53 and the jig receiving portion 55 is narrow, it is difficult to remove the mold. However, it becomes easy to take out the mold by providing the side surface of the dividing portion 57 with an inclination. As a result, the durability of the mold is improved, the maintenance interval of the mold is extended, and the cost is reduced.

  Further, as an effect of providing an inclination, the adhesive that has flowed into the dividing portion 57 can flow downward in the drawing (the surface of the holding member 50) along the ridge line of the inclined surface 58, and the adhesive flowing into the dividing portion 57 It is possible to prevent the dividing portion 57 from overflowing and flowing into the jig receiving surface 56.

  When attaching each head 10 to the holding member 50, positioning was performed using a glass mask. However, the present invention is not limited to such a mode, and any method can be used as long as each head 10 can be arranged at the installation position of the holding member 50. .

  Further, the head module 1 according to the present embodiment can be applied to a so-called line-type ink jet recording apparatus in which the head module 1 is fixed and printing is performed simply by transporting a recording medium.

  Furthermore, the present invention is intended for all liquid ejecting head modules having a liquid ejecting head widely. For example, recording heads such as various ink jet recording heads used in image recording apparatuses such as printers, liquid crystal displays, and the like. Liquid Material Ejection Head Used for Production of Color Filters, Electrode Material Ejection Head Used for Electrode Formation of Organic EL Display, FED (Field Emission Display), etc., Bio-Organic Material Ejection Head Used for Bio Chip Production, etc. It can also be applied to a head module.

  I ink jet recording apparatus (liquid ejecting apparatus), 1 head module (liquid ejecting head module), 10 head (liquid ejecting head), 20 head body, 21 nozzle plate, 22 nozzle, 32 holding surface, 40 flow path member, 50 Holding member, 53 mounting portion, 54 mounting surface, 55 jig receiving portion, 56 jig receiving surface, 60 fastening member, 70 positioning jig, 78 positioning pin, 79 imaging means, 80 alignment mask, 81 reference mark

Claims (5)

A plurality of liquid ejecting heads for discharging liquid;
A holding member that holds the plurality of liquid jet heads,
A liquid ejecting head module in which a mounting surface on which a plurality of the liquid ejecting heads are placed and a jig receiving surface on which a jig supporting the holding member is abutted are provided on one surface of the holding member. A manufacturing method comprising:
On one side of the holding member, the mounting surface and the jig receiving surface are divided and formed flush with each other,
The holding member is brought into contact with the jig at the jig receiving surface,
A method of manufacturing a liquid ejecting head module, comprising: temporarily fixing a plurality of the liquid ejecting heads to the mounting surface of the holding member with an adhesive and permanently fixing the liquid ejecting heads with a fastening member. In the manufacturing method of the liquid jet head module according to claim 1,
The method of manufacturing a liquid ejecting head module, wherein the mounting surface and the jig receiving surface are formed in the same step in the same process. In the manufacturing method of the liquid jet head module according to claim 1 or 2,
Three jig receiving surfaces are provided,
3. The liquid ejecting head module, wherein the three jig receiving surfaces are arranged so that a center of the one surface of the holding member is positioned inside a triangle formed by connecting the three jig receiving surfaces. Manufacturing method. A plurality of liquid ejecting heads for discharging liquid;
A holding member that holds the plurality of liquid jet heads,
On one surface of the holding member, a mounting surface on which a plurality of the liquid jet heads are mounted, and a jig receiving surface on which a jig supporting the holding member is abutted are provided.
The mounting surface and the jig receiving surface are divided and formed flush with each other,
A plurality of the liquid jet heads are fixed to the mounting surface of the holding member with an adhesive and a fastening member,
The liquid jet head module, wherein the adhesive is not attached to the jig receiving surface.   A liquid ejecting apparatus comprising the liquid ejecting head module according to claim 4.

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